This a counter project for simulink using system generator blocks. There is LED output. I implemented it on spartan sp601 development board and it works.
File list:
sp601_sayac_sysgen_OK
....................\iseconfig
....................\.........\ferre_cw.projectmgr
....................\.........\ferre_cw.xreport
....................\sysgen
....................\......\cntr_11_0_c8730b719bcf361e.ngc
....................\......\cntr_11_0_c8730b719bcf361e.vhd
....................\......\consolidate.log
....................\......\ferre.vhd
....................\......\ferre_cw.sdc
....................\......\ferre_cw.ucf
....................\......\ferre_cw.vhd
....................\......\ferre_cw.vho
....................\......\ferre_cw.xcf
....................\......\ferre_cw.xdc
....................\......\ferre_cw_stub.vhd
....................\......\globals
....................\......\hdlFiles
....................\......\isim_ferre.prj
....................\......\masterScript7053120755533780148.pl
....................\......\nonleaf_results.vhd
....................\......\perl_results.vhd
....................\......\script_results2530025722795451258
....................\......\synopsis
....................\......\synopsis.1
....................\......\synopsis.2
....................\......\synopsis.diff
....................\......\synopsis_com.xilinx.sysgen.netlister.CfWriter
....................\......\synopsis_com.xilinx.sysgen.netlister.ClockWrapper
....................\......\vcom.do
....................\......\xlpersistentdff.ngc
....................\......\xst_ferre.prj
....................\......\xst_ferre.scr
....................\xlnx_auto_0_xdb
....................\...............\cst.xbcd
....................\xst
....................\...\dump.xst
....................\...\........\ferre_cw.prj
....................\...\projnav.tmp
....................\...\work
....................\...\....\work.vdbl
....................\...\....\work.vdbx
....................\_ngo
....................\....\netlist.lst
....................\_xmsgs
....................\......\bitgen.xmsgs
....................\......\map.xmsgs
....................\......\ngdbuild.xmsgs
....................\......\par.xmsgs
....................\......\pn_parser.xmsgs
....................\......\trce.xmsgs
....................\......\xst.xmsgs
....................\blockCoreMap
....................\cntr_11_0_c8730b719bcf361e.ngc
....................\commandLines
....................\ferre.slx
....................\ferre.vhd
....................\ferre_cw.bgn
....................\ferre_cw.bit
....................\ferre_cw.bld
....................\ferre_cw.cmd_log
....................\ferre_cw.drc
....................\ferre_cw.gise
....................\ferre_cw.lso
....................\ferre_cw.ncd
....................\ferre_cw.ngc
....................\ferre_cw.ngd
....................\ferre_cw.ngr
....................\ferre_cw.pad
....................\ferre_cw.par
....................\ferre_cw.pcf
....................\ferre_cw.prj
....................\ferre_cw.ptwx
....................\ferre_cw.sdc
....................\ferre_cw.sgp
....................\ferre_cw.stx
....................\ferre_cw.syr
....................\ferre_cw.twr
....................\ferre_cw.twx
....................\ferre_cw.ucf
....................\ferre_cw.unroutes
....................\ferre_cw.ut
....................\ferre_cw.vhd
....................\ferre_cw.xcf
....................\ferre_cw.xdc
....................\ferre_cw.xise
....................\ferre_cw.xpi
....................\ferre_cw.xst
....................\ferre_cw_bitgen.xwbt
....................\ferre_cw_envsettings.html
....................\ferre_cw_guide.ncd
....................\ferre_cw_import.log
....................\ferre_cw_map.map
....................\ferre_cw_map.mrp
....................\ferre_cw_map.ncd
....................\ferre_cw_map.ngm
....................\ferre_cw_map.xrpt
....................\ferre_cw_ngdbuild.xrpt
....................\ferre_cw_pad.csv
....................\ferre_cw_pad.txt
....................\ferre_cw_par.xrpt
....................\ferre_cw_summary.html
....................\ferre_cw_summary.xml
....................\ferre_cw_usage.xml
....................\ferre_cw_xst.xrpt
....................\globals
....................\hdlFiles
....................\isim_ferre.prj
....................\name_translations
....................\par_usage_statistics.html
....................\ProjectGeneration.tcl
....................\SgIseProject.tcl
....................\synopsis
....................\usage_statistics_webtalk.html
....................\vcom.do
....................\webtalk.log
....................\webtalk_pn.xml
....................\xlpersistentdff.ngc
....................\xst_ferre.prj
....................\xst_ferre.scr
....................\_impact.cmd
....................\_impact.log